Collocations for armed - adj.

be

heavily, well
lightly
fully

with
The soldiers were all armed with automatic rifles.

Armed is used with these nouns:
aggression, assault, bodyguard, camp, citizen, clash, combat, conflict, confrontation, convoy, encounter, escort, faction, force, gang, guard, guerrilla, helicopter, hold-up, insurrection, intervention, man, marshal, militia, neutrality, patrol, police, policeman, raid, rebel, rebellion, resistance, revolt, robber, robbery, service, siege, soldier, struggle, terrorist, thug, troops, uprising, wing